Biologically active and reserve substances of Siberian peonies

Vera A Kostikova,Andrey S Erst,Olga V Kalendar,Olga Yu Vasilyeva,Nikolai A Tashev,V.V Chepinoga,K.P Ma

doi:10.1051/bioconf/20213800061

Abstract

Levels of biologically active and reserve substances were investigated in the leaves and rhizomes of Paeonia anomala L., P. hybrida Pall., and P. lactiflora Pall. The peonies’ leaves are rich in ascorbic acid (1205.7 mg/100g in P. anomala) and tannins (15.9% in P. lactiflora and 15.7% in P. anomala) at the beginning of the growth season. Concentrations of flavonols, pectins, and carotenoids in the Siberian peonies are low at the beginning of the growth season. P. lactiflora is a promising species for further research on the set and levels of biologically active and reserve substances in rhizomes because this species stands out among the three Siberian species in terms of the levels of catechins (1297.8 mg/100g), protopectins (10.1%), saponins (19.2%), and sugars (22.1%) in rhizomes. In these parts of the plant, starch (18.6%) accumulates the most in P. hybrida among the studied peonies species. Concentrations of the analyzed substances in the rhizomes of the peonies change significantly by the end of the growth season and vary widely among these species. Levels of ascorbic acid (except for P. hybrida), protopectins, and starch increase significantly while concentrations of catechins and sugars decrease in the rhizomes by the end of the growth season.

Highlights

The genus Paeonia L. includes 33 species, distributed mainly in Europe, the Mediterranean, and East and Southeast Asia [1]
The leaves and rhizomes of P. lactiflora, P. anomala, and P. hybrida were collected at the beginning of the growth season and at its end (17 August 2017) from “Collections of living plants indoors and outdoors” in a garden plot located at a forest-steppe site with gray forest soil and a mean yearly temperature/precipitation of 1.8 °C/448 mm
It was revealed that flavonol levels in the leaves are almost identical between the peonies of the section Sternia (P. anomala and P. hybrida); these concentrations are slightly higher than those in the leaves of P. lactiflora

Summary

Introduction

The genus Paeonia L. includes 33 species, distributed mainly in Europe, the Mediterranean, and East and Southeast Asia [1]. There are three species in the flora of Siberia: P. anomala L., P. hybrida Pall., and P. lactiflora Pall. The Siberian species belong to two sections: Flavonia Kem.-Nath. P. lactiflora has one to seven milky-white flowers per shoot, while P. anomala and P. hybrida have one purple-pink flower per shoot [1]. The leaves of P. lactiflora are double trifoliate, in contrast to the triple trifoliate pinnate leaves of P. anomala and P. hybrida [3]. Paeonia hybrida reproduces via numerous spindle-shaped tuberous parts of lateral roots, unlike the other two species, which usually reproduce as part of the rhizome with a bud at the base of the shoot [4]

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Results